Valve-grinding machine.



D. D. ARCHlBALD L F. L. LOUANDES.

VALVE GRINDING MACHINE.

APPUCATION FiLED APR.23,19II.

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Patented Aug. 27, 1918.

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invrrnn sfrrns rafrivfr oneindig DAVID D. ARCHIBALD AND FRANK L.LOUANDES, OF TOLEDO, OHIO.

VALVE-GRINDING MACHIN E.

Application lerl April 23, 1917.

To all 'whom t may concern:

Re it known that we, Divin D. AnoniBaLD and Fnixxx L. LoUANDns, citizensof the United States, residing at Toledo, in the county of Lucas, Stateof Ohio, `have invented certain new and useful improvements inValve-Grinding Machines; and we do hereby declare the following' to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to new and useful improvements in devices forgrinding gas engine valve seats, and has for its primary object toprovide a device of this character adapted to grind a plurality of valveseats at a single operation.

A further object of the invention is to provide a device of thischaracter which is adapted to be secured to the gas engine cylindersafter the cylinder heads have been removed therefrom.

A further object of this invention is to provide a device of thischaracter which is adjustable to engines of different typesand sizes.

Referring to the drawings,

Figure 1, is a side elevation of the device,

Fig. 2, is an end elevation,

Fig. 3, is a top plan view, and,

Fig. 4, is a detail sectional view on the line 4 4 of Fig. l.

Referring more particularly to the dra\vings, the reference character 5designates the top face of the cylinder block after the cylinder headhas been removed therefrom, and 6 represents the bolt openings in whichthe bolts which secure the cylinder head in place engage.

In carrying out the invention, a plurality of standards 7 are employed,the lower end of which are provided with a right angular foot S which isperforated to receive a bolt 9. This bolt is adapted to engage in one ofthe openings 6 in the cylinder block, and threaded on the same is a nut10 which clamps the foot member 8 of the standard 7 between itself andthe cylinder block. 1t is to be understood that there are four of thevertically extending standards 7 and that they are arranged one at eachcorner of the cylinder block, and connecting said vertically extendingstandards in pairs are transversely extending bars 11. The verticallyextending standards 7 are each pro- Speeication of Letters Patent.

Patented Ane'. 27, 1918i.

serial No. iefioee.'

vided with a longitudinally extending slot 12, and the t 'ansverselyextending bars 11 are likewise provided each with a longitudinallyextending slot 13, and passing' through said slots 12 and 13 is a bolt11i by which the transversely extending bars 1l are adjusted withrelation to the vertically extending standards 7 to which they areconnected.

The transversely extending bars 11 are each provided with a slot 14 andengage in'said slots is a longitudinally extending bar 15 which isprovided with a set screw 16 by which the bar 15 is secured againstmovement relative to the transversely extending bar 11 when it has beenproperly adjusted. The longitudinally extending bar 15 is provided witha plurality of cut out portions 17, and slidably mounted in eachy ofsaid cut out portions 17 is a block or the like 18 which is providedwith a perforation and projecting through each of the sliding blocks 18is a shaft 19 the lower end of which is tapered as at 2O to engage thetop face of the valve 21. Secured to the upper end of each of the shafts19 is a gear or sprocket 22 .which is secured to the shaft in such amanner as to rotate the same upon rotary movement being imparted to saidsprocket. Extending vertically from each end of the longitudinallyextending bar 15 is a standard 23 which is adjustably secured in placeby means of a set screw 24, and loosely mounted on the upper end of eachof the said standards is a sprocket wheel 25, while intermediate theends of said bar 15 is a shaft 26 to the upper end of which is secured agear or sprocket 27 which latter is provided with a squared end for thereception of the squared socket 28 of a driving crank 29. Passing aroundeach of the sprockets 25 is a chain 30 which chain engages each ofthesprockets 22 and the sprocket 27.

The operation of the device is described as follows:

The vertical standards 7 are irst'secured to the upper end of thecylinder block, and the transversely extending bars 11 are adjusted bymeans of the set screws 14e to properly position the longitudinallyextending bar 15. After the longitudinally extending bar 15 has beenproperly adjusted, the blocks 18 are adjusted so that their openingswill lie substantially over the center of its respective valve 21 inwhich position it is secured by means of a set screw 31.

With the parte in this position it. will be seen that upon rotation otthe eranl; 29, the Shaft 2G will be rotated and through the inediuiu otthe chain 30, rotar'v niovonient will he imparted to each of the eli-aili9, and. through the inediuni of Said Shaft each ot' the valve inenilers 2l will he rotated in their respective valve SeatS to regrind theSurface thereof.

By Constrneting` tho nienilaera T, ll. l5, and 18, in such a manner thattliejv are adjustable ivith roe-peet to each other, it ie apparent. thatthe device adapted for use with automobile engines ot various types andeizee, and that any number of shafts i9 and gears nia \7 he einplojvedtor the purpoee ot grinding' the valves of inotors in which an)7 nunilerot valves niajf' be enr ploved.

lilaving` thus described the in vontion, vvliat iS olaiined is:

l. The eoniliination ivith a pluralityT oit supports adapted to beSecured in spaced relation to each other upon a cylinder block, of crossnieniliers adapted to he Connected for vertical adjustment to pairs oi7said Sup ports` and havingl longitudinal Slots therein, a longitudinalhar engaged in Said slots, nieans for taetening' the longitudinal liarin ite` adjusted position in said slots, Said longitudinal har having aplurality of out out portions, bloelis slidalily mounted in the out outportione, ineane for fastening the blocks in their adjusted positions,valve grinding members engaged in said blocks and having gears at theirupper ender` and a driven endlee chain supported to have the opposedparallel stretches thereof engaged with the gears at oppooite Sides otthe saine.

2. 'llhe combination vvitli a. plurality of supports adapted to besecured in spaced relation to each other upon a cylinder block, ot'Cross ineinlaera adapted to be connected for vertical adjustment topairs of Said eupportS and having;n longitudinal Slots therein, alongitudinal bar engaged in said Slots, ine-ane` for fastening thelongitudinal bar in ite adjusted position in said slots, Said lon`Q'itudinal har having; a pluralityv of eut out portions.v blocksSlidaliljY mounted in the out out portions. means for fastening' theloloelts` in their adjusted positions, valve grinding inenihers engagedin said blocks and haviupa gears at their upper ende, a driven endlesschain Supported to have the oppoSed parallel stretches thereof engagedwith the lgears at opposite Sides of the saine, and means Sup ported h vthe longitudinal har for imparting' movement to the chain.

In 'tetinionjIT `whereof ive atti); our Signatures` in the pieSenCe oftvvo Witnesses.

DAVD D. ARCHBLD. FRANK L. LUNDES. lllitnesses C. lll. SANDERS, Um'ssnsl). Bourin.

ci ics o this patent may be obtained for ive cents each, by addresingthe Commissioner of 'ra-tente,

Washington, l.

